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In Multi-host environment, when the PHC is updated by one host,
an async message from firmware will be sent to other hosts.
Re-initialize the timecounter when the driver receives this
async message.
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The adjusted time is set in the PHC in RTC mode. We also need to
update the snapshots ptp->current_time and ptp->old_time when the
time is adjusted.
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for RTC mode if it is supported by firmware. In RTC
mode, the PHC is set to the 64-bit clock. Because the legacy interface
is 48-bit, the driver still has to keep track of the upper 16 bits and
handle the rollover.
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Making the ptp free and timecounter initialization code into separate
functions so that later patches can use them.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The main changes are PTP support for RTC, additional NVM error codes,
backing store v2 firmware APIs.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert stmmac to use the mac_select_pcs() interface rather than using
phylink_set_pcs(). The intention here is to unify the approach for PCS
and eventually to remove phylink_set_pcs().
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert stmmac to use phylink_generic_validate() now that we have the
MAC capabilities and supported interfaces filled in, and we have the
PCS validation handled via the PCS operations.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Phylink will use PCS polling whenever the PCS's poll member is set, so
setting phylink_config.pcs_poll as well is redundant.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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stmmac explicitly calls the xpcs driver to validate the ethtool
linkmodes. This is no longer necessary as phylink now supports
validation through a PCS method. Convert both drivers to use this
new mechanism.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fill in phylink's supported_interfaces bitmap with the PHY interface
modes which can be used to talk to the PHY.
We indicate that the PHY interface mode passed in platform data is
always supported, as this is the initial mode passed into phylink.
When there is no PCS specified, we assume that this is the only mode
that is supported - indeed, the driver appears not to support dynamic
switching of interface types at present.
When a xpcs is present, it defines the PHY interface modes that the
stmmac driver can support. Request the supported interfaces from the
xpcs driver, and pass them to phylink.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the MAC speed, duplex and pause capabilities to the phylink_config
structure, and switch stmmac_validate() to use phylink_get_linkmodes()
to generate the mask of supported ethtool link modes.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a function to the xpcs driver to retrieve the supported PHY
interface modes, which can be used by drivers to fill in phylink's
supported_interfaces mask.
We validate the interface bit index to ensure that it fits within the
bitmap as xpcs lists PHY_INTERFACE_MODE_MAX in an entry.
Tested-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> # Intel EHL Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Transceiver module reset through 'rst' field in PMAOS register is not
supported on RJ45 ports, so module reset should be rejected.
Therefore, before trying to access this field, validate the port module
type that was queried during initialization and return an error to user
space in case the port module type is RJ45 (twisted pair).
Output example:
# ethtool --reset swp11 phy
ETHTOOL_RESET 0x40
Cannot issue ETHTOOL_RESET: Invalid argument
$ dmesg
mlxsw_spectrum 0000:03:00.0 swp11: Reset module is not supported on port module type
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PMMP (Port Module Memory Map Properties) and MCION (Management Cable IO
and Notifications) registers are not supported on RJ45 ports, so setting
and getting power mode should be rejected.
Therefore, before trying to access those registers, validate the port
module type that was queried during initialization and return an error
to user space in case the port module type is RJ45 (twisted pair).
Set output example:
# ethtool --set-module swp1 power-mode-policy auto
netlink error: mlxsw_core: Power mode is not supported on port module type
netlink error: Invalid argument
Get output example:
$ ethtool --show-module swp11
netlink error: mlxsw_core: Power mode is not supported on port module type
netlink error: Invalid argument
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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MCIA (Management Cable Info Access) register is not supported on RJ45
ports, so getting module EEPROM should be rejected.
Therefore, before trying to access this register, validate the port
module type that was queried during initialization and return an error
to user space in case the port module type is RJ45 (twisted pair).
Examples for output when trying to get EEPROM module:
Using netlink:
# ethtool -m swp1
netlink error: mlxsw_core: EEPROM is not equipped on port module type
netlink error: Invalid argument
Using IOCTL:
# ethtool -m swp1
Cannot get module EEPROM information: Invalid argument
$ dmesg
mlxsw_spectrum 0000:03:00.0 swp1: EEPROM is not equipped on port module type
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Query and store port module's type during initialization so that it
could be later used to determine if certain configurations are allowed
based on the type.
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the Port Module Type Mapping (PMTP) register. It will be used by
subsequent patches to query port module types and forbid certain
configurations based on the port module's type.
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As part of a process for supporting a new system with RJ45 connectors,
100BaseT and 1000BaseT link modes need to be supported.
Add support for these two link modes by adding the two corresponding
bits in PTYS (Port Type and Speed) register.
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The next patches will forbid querying the port module's EEPROM info when
its type is RJ45 as in this case no transceiver module can ever be
connected to the port.
Add netdev argument to mlxsw_env_get_module_info() so it could be used
to print an error to the kernel log via netdev_err().
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The number of modules can be resolved from the first argument, so do not
pass it.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the 'err' variable and simply return.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Copy scattered mac address octets into an array then eth_hw_addr_set().
Fixes: adeef3e32146 ("net: constify netdev->dev_addr")
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://lore.kernel.org/r/20220125144007.64407-1-tsbogend@alpha.franken.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Variable new_csr6 is being initialized with a value that is never
read, it is being re-assigned later on. The assignment is redundant
and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220123183440.112495-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Since some interrupt states may be cleared by hardware, the driver
may receive an empty interrupt. Currently, the VF driver directly
disables the vector0 interrupt in this case. As a result, the VF
is unavailable. Therefore, the vector0 interrupt should be enabled
in this case.
Fixes: b90fcc5bd904 ("net: hns3: add reset handling for VF when doing Core/Global/IMP reset")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.
Also, address the following sparse warnings:
drivers/net/ethernet/microsoft/mana/gdma_main.c:677:24: warning: using sizeof on a flexible structure
Link: https://github.com/KSPP/linux/issues/174
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is based on series [0] that extended the PM core. Now the compiler
can see the PM callbacks also on systems not defining CONFIG_PM.
The optimizer will remove the functions then in this case.
[0] https://lore.kernel.org/netdev/20211207002102.26414-1-paul@crapouillou.net/
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This (ab)use of a data buffer made some static code checkers
rather itchy, so we replace the a generic data buffer with
the union in the struct ionic_vf_setattr_cmd.
Fixes: fbb39807e9ae ("ionic: support sr-iov operations")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver can be premature in detecting stalled firmware
when the heartbeat is not updated because the firmware can
occasionally take a long time (more than 2 seconds) to service
a request, and doesn't update the heartbeat during that time.
The firmware heartbeat is not necessarily a steady 1 second
periodic beat, but better described as something that should
progress at least once in every DECVMD_TIMEOUT period.
The single-threaded design in the FW means that if a devcmd
or adminq request launches a large internal job, it is stuck
waiting for that job to finish before it can get back to
updating the heartbeat. Since all requests are "guaranteed"
to finish within the DEVCMD_TIMEOUT period, the driver needs
to less aggressive in checking the heartbeat progress.
We change our current 2 second window to something bigger than
DEVCMD_TIMEOUT which should take care of most of the issue.
We stop checking for the heartbeat while waiting for a request,
as long as we're still watching for the FW status. Lastly,
we make sure our FW status is up to date before running a
devcmd request.
Once we do this, we need to not check the heartbeat on DEV
commands because it may be stalled while we're on the fw_down
path. Instead, we can rely on the is_fw_running check.
Fixes: b2b9a8d7ed13 ("ionic: avoid races in ionic_heartbeat_check")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The dbid_inuse bitmap is not useful in this driver so remove it.
Fixes: 6461b446f2a0 ("ionic: Add interrupts and doorbells")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the driver is going through reset, it will eventually call
ionic_lif_init(), which does a lot of re-initialization. One
of the re-initialization steps is to setup the adminq and
enable napi for it. If something breaks after this point
we can end up with a kernel NULL pointer dereference through
ionic_adminq_napi.
Fix this by making sure to call napi_disable() in the cleanup
path of ionic_lif_init(). This forces any pending napi contexts
to finish and prevents them from being recalled before deleting
the napi context.
Fixes: 77ceb68e29cc ("ionic: Add notifyq support")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Buffer DMA mapping happens in ionic_tx_map_skb() and this function is
called from ionic_tx() and ionic_tx_tso(). If ionic_tx_map_skb()
succeeds, but a failure is encountered later in ionic_tx() or
ionic_tx_tso() we aren't unmapping the buffers. This can be fixed in
ionic_tx() by changing functions it calls to return void because they
always return 0. For ionic_tx_tso(), there's an actual possibility that
we leave the buffers mapped, so fix this by introducing the helper
function ionic_tx_desc_unmap_bufs(). This function is also re-used
in ionic_tx_clean().
Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently when a request for add/deleting a filter is made when
ionic_heartbeat_check() returns failure the driver will be overly
verbose about failures, especially when these are usually temporary
fails and the request will be retried later. An example of this is
a filter add when the FW is in the middle of resetting:
IONIC_CMD_RX_FILTER_ADD (31) failed: IONIC_RC_ERROR (-6)
rx_filter add failed: ADDR 01:80:c2:00:00:0e
Fix this by checking for -ENXIO and other error values on filter
request fails before printing the error message. Add similar
checking to the delete filter code.
Fixes: f91958cc9622 ("ionic: tame the filter no space message")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently when an administrator configures a VF via ndo_set_vf*,
the driver will send the set command to FW and then update the
cached value. The cached value is then used when reporting
VF info via ndo_get_vf_config.
A problem is that the VF info may have been updated between
the last ndo_set_vf* and ndo_get_vf_info commands via some
other method, i.e. a VF changes its MAC address (assuming it's
allowed to do so) and since this is all managed by the FW,
this new value won't be reflected in the PF's cache of values.
To fix this, update the driver to always get the latest VF
information by making use of the IONIC_CMD_VF_GETATTR dev
command. The FW may not support getting all the attributes for
IONIC_CMD_VF_GETATTR, so the driver will only update the cached
VF config members if their associated IONIC_CMD_VF_GETATTR
was successful. Otherwise the cached VF config members will
remain the same as what was set in ndo_set_vf*.
Fixes: fbb39807e9ae ("ionic: support sr-iov operations")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When dev commands fail, an error message will always be printed,
which may be overly alarming the to system administrators,
especially if the driver shouldn't be printing the error due
to some unsupported capability.
Similar to recent adminq request changes, we can update the
dev command interface with the ability to selectively print
error messages to allow the driver to prevent printing errors
that are expected.
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Recent changes went into the driver to allow flexibility when
printing error messages. Unfortunately this had the unexpected
consequence of printing confusing messages like the following:
IONIC_CMD_RX_FILTER_ADD (31) failed: IONIC_RC_SUCCESS (-6)
In cases like this the completion of the admin queue command never
completes, so the completion status is 0, hence IONIC_RC_SUCCESS
is printed even though the command clearly failed. For example,
this could happen when the driver tries to add a filter and at
the same time the FW goes through a reset, so the AQ command
never completes.
Fix this by forcing the FW completion status to IONIC_RC_ERROR
in cases where we never get the completion.
Fixes: 8c9d956ab6fb ("ionic: allow adminq requests to override default error message")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure we print the TIMEOUT string if we had a timeout
error, rather than printing the wrong status.
Fixes: 8c9d956ab6fb ("ionic: allow adminq requests to override default error message")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When IONIC_EVENT_RESET is received, we only need to start the
fw_down process if we aren't already down, and we need to be
sure to set the FW_STOPPING state on the way.
If this is how we noticed that FW was stopped, it is most
likely from a FW update, and we'll see a new FW generation.
The update happens quickly enough that we might not see
fw_status==0, so we need to be sure things get restarted when
we see the fw_generation change.
Fixes: d2662072c094 ("ionic: monitor fw status generation")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Between fw running and fw actually stopped into reset, we need
a fw_stopping concept to catch and block some actions while
we're transitioning to FW_RESET state. This will help to be
sure the fw_up task is not scheduled until after the fw_down
task has completed.
On some rare occasion timing, it is possible for the fw_up task
to try to run before the fw_down task, then not get run after
the fw_down task has run, leaving the device in a down state.
This is possible if the watchdog goes off in between finding the
down transition and starting the fw_down task, where the later
watchdog sees the FW is back up and schedules a fw_up task.
Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's possible the FW is already shutting down while the driver is being
removed and/or when the driver is going through reset. This can cause
unexpected/unnecessary errors to be printed:
eth0: DEV_CMD IONIC_CMD_PORT_RESET (12) error, IONIC_RC_ERROR (29) failed
eth1: DEV_CMD IONIC_CMD_RESET (3) error, IONIC_RC_ERROR (29) failed
Fix this by checking the FW status register before issuing the reset
commands.
Also, since err may not be assigned in ionic_port_reset(), assign it a
default value of 0, and remove an unnecessary log message.
Fixes: fbfb8031533c ("ionic: Add hardware init and device commands")
Signed-off-by: Brett Creeley <brett@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull the watchdog init code out to a separate bite-sized
function. Code cleaning for now, will be a useful change in
the near future.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The watchdog expects the lif to fully exist when it goes off,
so lets not start the watchdog until all is ready in case there
is some quirky time dialation that makes probe take multiple
seconds.
Fixes: 089406bc5ad6 ("ionic: add a watchdog timer to monitor heartbeat")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sparse seems to have gotten a little more picky lately and
we need to revisit this bit of code to make sparse happy.
warning: incorrect type in initializer (different address spaces)
expected union ionic_dev_cmd_regs *regs
got union ionic_dev_cmd_regs [noderef] __iomem *dev_cmd_regs
warning: incorrect type in argument 2 (different address spaces)
expected void [noderef] __iomem *
got unsigned int *
warning: incorrect type in argument 1 (different address spaces)
expected void volatile [noderef] __iomem *
got union ionic_dev_cmd *
Fixes: d701ec326a31 ("ionic: clean up sparse complaints")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Recent changes made netdev->dev_addr const, and it's passed
directly to mpc52xx_fec_set_paddr().
Similar problem exists on the probe patch, the driver needs
to call eth_hw_addr_set().
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: adeef3e32146 ("net: constify netdev->dev_addr")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The cpsw driver didn't properly initialise the struct page_pool_params
before calling page_pool_create(), which leads to crashes after the struct
has been expanded with new parameters.
The second Fixes tag below is where the buggy code was introduced, but
because the code was moved around this patch will only apply on top of the
commit in the first Fixes tag.
Fixes: c5013ac1dd0e ("net: ethernet: ti: cpsw: move set of common functions in cpsw_priv")
Fixes: 9ed4050c0d75 ("net: ethernet: ti: cpsw: add XDP support")
Reported-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Tested-by: Colin Foster <colin.foster@in-advantage.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ym needs to be free when ym->cmd != SIOCYAMSMCS.
Fixes: 0781168e23a2 ("yam: fix a missing-check bug")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, on EEE capable platforms, if EEE SW timer is used, the SW
timer cause 1 wakeup/s even if the TX has successfully entered EEE.
Remove this unnecessary wakeup by only calling mod_timer() if we
haven't successfully entered EEE.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The 2nd param of phy_init_eee(): clk_stop_enable is a bool param, use
true or false instead of 1/0.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220123152241.1480-1-jszhang@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Variable val is being initialized with a value that is never read,
it is being re-assigned later. The assignment is redundant and
can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20220123184936.113486-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Variable reg is being masked however the variable is never read
after this. The assignment is redundant and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20220123184035.112785-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Daniel Borkmann says:
====================
pull-request: bpf-next 2022-01-24
We've added 80 non-merge commits during the last 14 day(s) which contain
a total of 128 files changed, 4990 insertions(+), 895 deletions(-).
The main changes are:
1) Add XDP multi-buffer support and implement it for the mvneta driver,
from Lorenzo Bianconi, Eelco Chaudron and Toke Høiland-Jørgensen.
2) Add unstable conntrack lookup helpers for BPF by using the BPF kfunc
infra, from Kumar Kartikeya Dwivedi.
3) Extend BPF cgroup programs to export custom ret value to userspace via
two helpers bpf_get_retval() and bpf_set_retval(), from YiFei Zhu.
4) Add support for AF_UNIX iterator batching, from Kuniyuki Iwashima.
5) Complete missing UAPI BPF helper description and change bpf_doc.py script
to enforce consistent & complete helper documentation, from Usama Arif.
6) Deprecate libbpf's legacy BPF map definitions and streamline XDP APIs to
follow tc-based APIs, from Andrii Nakryiko.
7) Support BPF_PROG_QUERY for BPF programs attached to sockmap, from Di Zhu.
8) Deprecate libbpf's bpf_map__def() API and replace users with proper getters
and setters, from Christy Lee.
9) Extend libbpf's btf__add_btf() with an additional hashmap for strings to
reduce overhead, from Kui-Feng Lee.
10) Fix bpftool and libbpf error handling related to libbpf's hashmap__new()
utility function, from Mauricio Vásquez.
11) Add support to BTF program names in bpftool's program dump, from Raman Shukhau.
12) Fix resolve_btfids build to pick up host flags, from Connor O'Brien.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (80 commits)
selftests, bpf: Do not yet switch to new libbpf XDP APIs
selftests, xsk: Fix rx_full stats test
bpf: Fix flexible_array.cocci warnings
xdp: disable XDP_REDIRECT for xdp frags
bpf: selftests: add CPUMAP/DEVMAP selftests for xdp frags
bpf: selftests: introduce bpf_xdp_{load,store}_bytes selftest
net: xdp: introduce bpf_xdp_pointer utility routine
bpf: generalise tail call map compatibility check
libbpf: Add SEC name for xdp frags programs
bpf: selftests: update xdp_adjust_tail selftest to include xdp frags
bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature
bpf: introduce frags support to bpf_prog_test_run_xdp()
bpf: move user_size out of bpf_test_init
bpf: add frags support to xdp copy helpers
bpf: add frags support to the bpf_xdp_adjust_tail() API
bpf: introduce bpf_xdp_get_buff_len helper
net: mvneta: enable jumbo frames if the loaded XDP program support frags
bpf: introduce BPF_F_XDP_HAS_FRAGS flag in prog_flags loading the ebpf program
net: mvneta: add frags support to XDP_TX
xdp: add frags support to xdp_return_{buff/frame}
...
====================
Link: https://lore.kernel.org/r/20220124221235.18993-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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